# -*- coding: utf-8 -*-#
#-------------------------------------------------------------------------------
# 建立者:       王景渊  
# Name:         2.11
# Description:
# Author:       dell
# Date:         2019/ajaxdata.json/22
#-------------------------------------------------------------------------------
print('import和from...import...演示')
#导入math函数
import math
print(math.floor(20.6))
from math import sqrt
print(sqrt(12))
from math import *
print(sin(3.14/2))

